public void RemoveParticipantsAsync_Underflow_ThrowsException()
{
var barrier = new AsyncBarrier(2);
barrier.SignalAndWaitAsync();
AssertEx.ThrowsException <InvalidOperationException>(() => barrier.RemoveParticipantsAsync(2));
}
public void RemoveZeroParticipants_DoesNothing()
{
var barrier = new AsyncBarrier(1);
Assert.AreEqual(1, barrier.ParticipantCount);
barrier.RemoveParticipantsAsync(0);
Assert.AreEqual(1, barrier.ParticipantCount);
}
public void RemoveParticipantsAsync_LastParticipant_CompletesPhase()
{
AsyncContext.Run(async() =>
{
var barrier = new AsyncBarrier(1);
Assert.AreEqual(0, barrier.CurrentPhaseNumber);
Assert.AreEqual(1, barrier.ParticipantCount);
Assert.AreEqual(1, barrier.ParticipantsRemaining);
await barrier.RemoveParticipantsAsync(1);
Assert.AreEqual(1, barrier.CurrentPhaseNumber);
Assert.AreEqual(0, barrier.ParticipantCount);
Assert.AreEqual(0, barrier.ParticipantsRemaining);
});
}
public void AddParticipants_FromZero_IncreasesParticipantsForCurrentPhase()
{
AsyncContext.Run(async() =>
{
var barrier = new AsyncBarrier(1);
Assert.AreEqual(0, barrier.CurrentPhaseNumber);
Assert.AreEqual(1, barrier.ParticipantCount);
Assert.AreEqual(1, barrier.ParticipantsRemaining);
await barrier.RemoveParticipantsAsync();
Assert.AreEqual(1, barrier.CurrentPhaseNumber);
Assert.AreEqual(0, barrier.ParticipantCount);
Assert.AreEqual(0, barrier.ParticipantsRemaining);
barrier.AddParticipants();
Assert.AreEqual(1, barrier.CurrentPhaseNumber);
Assert.AreEqual(1, barrier.ParticipantCount);
Assert.AreEqual(1, barrier.ParticipantsRemaining);
});
}
